[Google translate: hello, my 36 ships on the way to callie french have disappeared as well as french callie. They are not dry dock or museum and it makes impossible to add boats.
Thank you for correcting this error]
Please raise a support ticket. Just in case you're not familiar with how to do that, here's a summary:
Please go here: https://portal.pixelfederation.com/en/seaport/support and then click on the 'Technical' icon at the bottom of the page (see image below). This will give you the further option to select 'Bugs & Issues', and you can enter the details there. You will get a response by email.
Please let me know if this solves your problem.